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Mathematics
Mathematics
Problem
Let
A
=
{
1
,
2
}
A=\{1,2\}
A
=
{
1
,
2
}
and
B
=
{
x
,
y
,
z
}
B=\{x,y,z\}
B
=
{
x
,
y
,
z
}
. Which of the following ordered pairs belongs to
B
×
A
B\times A
B
×
A
but does NOT belong to
A
×
B
A\times B
A
×
B
? a)
(
x
,
y
)
(x,y)
(
x
,
y
)
b)
(
x
,
1
)
(x,1)
(
x
,
1
)
c)
(
1
,
x
)
(1,x)
(
1
,
x
)
d)
(
y
,
3
)
(y,3)
(
y
,
3
)
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